To:     Damien Le Moal <damien.lemoal@opensource.wdc.com>
Cc:     "Michael Schmitz" <schmitzmic@gmail.com>,
        "Bartlomiej Zolnierkiewicz" <b.zolnierkie@samsung.com>,
        "Jens Axboe" <axboe@kernel.dk>, linux-ide@vger.kernel.org,
        linux-kernel@vger.kernel.org
Message-Id: <44e0213a681f3c8ee4c6ab2ef9d61ce3ac00e368.1637727935.git.fthain@linux-m68k.org>
From:   Finn Thain <fthain@linux-m68k.org>
Subject: [PATCH] pata_falcon: Add missing __iomem annotations
Date:   Wed, 24 Nov 2021 15:25:35 +1100
Precedence: bulk

The zero day bot reported some sparse complaints in pata_falcon.c. E.g.

drivers/ata/pata_falcon.c:58:41: warning: cast removes address space '__iomem' of expression
drivers/ata/pata_falcon.c:58:41: warning: incorrect type in argument 1 (different address spaces)
drivers/ata/pata_falcon.c:58:41:    expected unsigned short volatile [noderef] [usertype] __iomem *port
drivers/ata/pata_falcon.c:58:41:    got unsigned short [usertype] *

The same thing shows up in 8 places, all told. Avoid this by use of
__iomem type casts.

Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Jens Axboe <axboe@kernel.dk>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Finn Thain <fthain@linux-m68k.org>
---
 drivers/ata/pata_falcon.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/ata/pata_falcon.c b/drivers/ata/pata_falcon.c
index 121635aa8c00..e2a88edd9dbf 100644
--- a/drivers/ata/pata_falcon.c
+++ b/drivers/ata/pata_falcon.c
@@ -55,14 +55,14 @@ static unsigned int pata_falcon_data_xfer(struct ata_queued_cmd *qc,
 	/* Transfer multiple of 2 bytes */
 	if (rw == READ) {
 		if (swap)
-			raw_insw_swapw((u16 *)data_addr, (u16 *)buf, words);
+			raw_insw_swapw((u16 __iomem *)data_addr, (u16 *)buf, words);
 		else
-			raw_insw((u16 *)data_addr, (u16 *)buf, words);
+			raw_insw((u16 __iomem *)data_addr, (u16 *)buf, words);
 	} else {
 		if (swap)
-			raw_outsw_swapw((u16 *)data_addr, (u16 *)buf, words);
+			raw_outsw_swapw((u16 __iomem *)data_addr, (u16 *)buf, words);
 		else
-			raw_outsw((u16 *)data_addr, (u16 *)buf, words);
+			raw_outsw((u16 __iomem *)data_addr, (u16 *)buf, words);
 	}
 
 	/* Transfer trailing byte, if any. */
@@ -74,16 +74,16 @@ static unsigned int pata_falcon_data_xfer(struct ata_queued_cmd *qc,
 
 		if (rw == READ) {
 			if (swap)
-				raw_insw_swapw((u16 *)data_addr, (u16 *)pad, 1);
+				raw_insw_swapw((u16 __iomem *)data_addr, (u16 *)pad, 1);
 			else
-				raw_insw((u16 *)data_addr, (u16 *)pad, 1);
+				raw_insw((u16 __iomem *)data_addr, (u16 *)pad, 1);
 			*buf = pad[0];
 		} else {
 			pad[0] = *buf;
 			if (swap)
-				raw_outsw_swapw((u16 *)data_addr, (u16 *)pad, 1);
+				raw_outsw_swapw((u16 __iomem *)data_addr, (u16 *)pad, 1);
 			else
-				raw_outsw((u16 *)data_addr, (u16 *)pad, 1);
+				raw_outsw((u16 __iomem *)data_addr, (u16 *)pad, 1);
 		}
 		words++;
 	}
-- 
2.26.3